<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>颜色</title>
    <style>
        .atguigu {
            color: #00ff00;
            font-family: "楷体";
        }
        .atguigu2 {
            color: rgb(124, 224, 255)
        }
        .atguigu3 {
            color: rgba(70, 160, 240, 0.5)
        }
    </style>
    <link rel="stylesheet" href="03.css">
</head>
<body>
    <h2 class="atguigu">尚硅谷</h2>
    <h2 class="atguigu2">尚硅谷</h2>
    <h2 class="atguigu3">尚硅谷</h2>
    <!-- .d*3 Tab键 -->
    <div class="d1"></div>
    <div class="d2"></div>
    <div class="d3"></div>
</body>
</html>